Dipper-tooth and clamp.



E. WEBB & V. KEEGH. DIPPER TOOTH AND CLAMP. APPLIGATION FILED 00T. 24, 1910,

19087,@21 Patented Feb. 17, 1914.

' S14/vented m Edward le/ehh., www /e wenn iae/e EDWARD WEBB AND VERNON KEECH, 0F VIRGINIA, MINNESOTA.

DIFFER-TOOTH AND CLAMP. l

Specification of Letters Patent.

Patented Feb. 17 i914.

Application led October 24, 19,10. Serial No. 588,816.

To all whom z't may concern Be it known that we, EDWARD WEBB and VERNON KEECH, citizens. of the Unlted States, residing at Virginia, in the county of St. Louis and State of Minnesota, have invented certain new and useful Improvements in Dipper-Teeth and Clamps, of which the following is a specification.

This invention comprehends certain new and useful improvements in excavating apparatus and the like, and the invention has for its primary object an improved dipper tooth and dipper tooth clamp for steam shovels, dredges, or other dippers, which will practically eliminate the necessity of riveting or bolting the teeth to the dipper, thereby saving time and expense. y

YVith this and other obfects in view as will more fully appear as the description proceeds, the invention consists in certain constructions and arrangements of the parts as we will hereinafter fully describe and claim.

For a full understanding of the invent-ion, reference is to be had to the following dei scription and accompanying drawings in which l Figure l is a transverse sectional view of adipper or bucket equipped with the improvements of our invention. F i 2 1s a longitudinal sectional view thereo F1 I. 3 is a fragmentary view of a lip sheet t at is employed.

Corresponding and like parts are referred to in the following description and indicated-in all the views of the accompanying drawings by the same reference characters.

Referring to the drawing the numeral 1 designates a dipper or bucket of 'any desired' construction or design except as hereinafter noted, and 2 designates any-desired number of tooth clam s which are riveted to the front of the ipper and to the rear -face thereof, as clearly illustrated inthe drawing, the'clamps being tapered as shownon three sides so as to produce tapering openings or sockets for the vdipper teeth 3. The teeth 3 are correspondingly tapered or of wedge shape and are designed to extend downwardly throu h the sockets of the clamps 2, being firmly riven therein and held therein by frictional engagement solely.

The Shanks of the teeth 3 are preferably inwardly-'offset or recessed intermediate of their ends as illustrated in Fig. 1 and extend over the rear face of a lip sheet 6 which is riveted or otherwise secured to the dipper or bucket l `at the forward edge thereof and serves to reinforce this portion of the dipper front. The sheet G is formed in its upper edge with notches 7 and the teeth are engaged in said notches so as to assist in holding the teeth properly in place. Preferably eac-h tooth is formed upon itsrforward edge near its upper end with a downwardly projecting lug 8 designed to engage against the forward side of the said lip-sheet. In the preferred arrangement of the parts, wear-bands are riveted or otherwise secured to the sheet 6 between the several teeth 3, the bands extending longitudinally as shown and lying against the inner face of the said sheet between the teeth 3 and also between the hooked lugs 8 thereof.

' From the foregoing description taken in connection with the accompanying drawing it will be seen that we have provided a very simple and durable construction of dipper tooth and clamp which avoids the necessity of using rivets or similar fastening devices to directly secure the teeth to the bucket. It will also be noted that the teeth are held in place, in the preferred arrangement of the parts, entirely by the wedge-shaped clamp plates 2 and the engagement of the teeth .with the notches 7 of the lip sheet, this construction rendering it easy to apply the teeth by merely driving them into place, the teeth being also capable of being easily removed whenever desired by merely drifting them out of the clamping plates 2.

What we claim is:A

1. A dipper, clamp plates arranged in a transverse series upon the inner side of the front of the dipper, teeth provided with Shanks fitting frictionally in said clamp plates and held solely by such engagement, a. lip-sheet secured to the front of the dipper and formed in one edge with notches, the teeth being formed with lugs and at the juncture of thelugs therewith being engaged in said notches, and spacing members fitting over the edge of the lip-sheet and extending between adjacent ones of the teeth whereby to space the said teeth.

2. A dipper, a lip-sheet secured upon the inner side of the front of the dipper at the upper end thereof, a tapering socket member arranged upon the said inner side of the front, and a tooth havinga tapered shank tting frictionally in said socket and held solely by such engagement, the tooth being formed in its under side with a, recess and upon its said side adjacent its upper end with a lug extending downwardly inof that portion of the shank of the toot-l1 below the recess, whereby to permit of the upward withdrawal of the tooth from its socket and disengagement of its lugfrom the said front of the flipper.

3. A clipper, clamp plates connected to the dipper and formed with sockets, teeth provided with Shanks tting in said sockets,

noeneei a lip sheet secured to the clipper and formed in one edge with notches, the teeth being formed wthlugs and at the juncture of the lugs therewith being engaged in said notches, and .wear bands secured to the lip sheet and extending over the front and rear faces thereof between the teeth.

ln testimony' whereof, we alx our signa? tures in presence of two witnesses.

EDWARD WEBB. VERNN KEE CH.

Witnesses:

A. G. MCCRIMMON, L. M. UsBoRN., 

